A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan.The mortgage payoff calculator helps you find out. Create a Loan Payoff Letter online and download it as a PDF or Word document. Customize and print a blank Loan Payoff Letter for free. Provide a cover letter on your company letterhead to include: Mortgagor(s) information. Please include a per diem amount in the statement. Please email this information to as soon as possible. The mortgage payoff calculator helps you find out. Actual cost to record the satisfaction of your mortgage.